JP3165307B2 - Human body fixture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a patient lying on a stretcher of a rocking bed, for example, by holding the patient from both sides in order to prevent the patient from falling down when the rocking bed tilts (rocks). BACKGROUND OF THE INVENTION The present invention relates to a human body fixing device to be fixed, and more particularly to an improvement in a height adjusting mechanism of a touch board in contact with a human body in a height direction. In addition to the swing bed, the present invention can also be applied to a human body fixed in a stretcher (patient moving cart) or the like.

[0002]

2. Description of the Related Art Conventionally, severely ill patients or patients who have been subject to long-term body movement limitation (paralysis-resistant patients, people with injured heads, people with complex sclerosis, people with broken back columns, and patients with voluntary movements) Various complications (respiratory pneumonia, atelectasis, thrombophlebitis) due to the inability of the disabled or severely ill patients, including those with involuntary seizures, to refrain from moving their patients , Pulmonary embolism, urolithiasis, urinary tract infections, pressure ulcers, osteoporosis, muscle wasting, ectopic bone formation, constipation and fecal stool, orthostatic hypotension) In order to prevent various complications, a swing bed has been proposed.

[0003] In such a swing type bed, when the stretcher portion of the bed is rocked, a patient lying on the stretcher portion is prevented from falling off the stretcher portion, and a human body holding the patient from both sides is fixed. Tools are used.

[0004]

Generally, the holding of a patient by a human body fixture is performed by lightly pressing the touch boards provided on a pair of human body fixtures attached to both sides of the stretcher from both sides of the patient. However, since there are individual differences in the size and shape of the human body, it is necessary to adjust the height and width directions of the touch board and the contact angle of the touch board with the human body.

In the conventional human body fixing device, the adjustment in the height direction is performed by rotating the screw shaft with the handle, so that the operation is complicated and the handle becomes an obstacle when not in use. In addition, there is a problem that the operation is complicated because the attachment and detachment of the human body fixture to and from the bed and the adjustment of the height direction are performed separately.

The present invention is intended to solve such a problem, and it is possible to easily lock and unlock the human body fixing device in the height direction by rotating the lever, and to fix the human body fixing device. An object of the present invention is to provide a human body fixing device that can be attached to and detached from a bed without using an accessory such as a handle, and can prevent the human body fixing device from being accidentally dropped from the bed.

[0007]

According to a first aspect of the present invention, there is provided a human body fixing device for holding and fixing a patient on a stretcher from both sides. A fixed block which is attached to the stretcher so as to be adjustable in length and has a mounting portion to which a support member of a touch board as a contact portion to the patient is mounted, and which constitutes a main portion of the mounting portion. An engaging body attached to one side surface of the stretcher portion and having an engagement groove engaged from above with the rail member extending in the length direction of the stretcher portion is mounted inside the upper portion. At the lower part, an angle having a rail engaging groove that engages the rail member from below is swingably mounted via a pivot, a coil spring is wound around the pivot, and one end of the coil spring is attached to the fixed block. Person in charge At the same time, the other end is locked from the outside to a pin implanted in the angle, and an angle fixing cam is rotatably attached to the pin, and the angle fixing cam is attached to the surface of the fixing block. A flat cam surface that can be abutted and a curved cam surface connected to the flat cam surface are formed, and the cam surface of the angle cam fixing cam is connected to the flat cam surface and the curved cam surface. And the radius of the curved cam surface is set such that the radius of the curved cam surface decreases as the distance from the connecting portion decreases, and the flat cam surface becomes smaller than the interval between the pin and the pin. And

[0008] The human body fixture according to the second aspect is the first aspect.
In the human body fixing device according to the above, a pressing piece formed on a pressing surface against the side surface of the rail member is movably inserted into the fixing block, and an abutment surface formed on the outside of the pressing piece. A position fixing lever having a first cam surface and a second cam surface that can be brought into contact with each other is rotatably attached to the fixed block via a spindle, and the first cam surface and the spindle are connected to each other. The distance is set to be larger than the distance between the second cam surface and the support shaft.

According to a third aspect of the present invention, the position fixing lever and the angle fixing cam are provided with a turning lever and a cam lever, respectively, and the first cam surface of the position fixing lever is provided. When the pressing piece is pushed toward the rail member to lock the fixed block, the lever portion is in a storage state substantially parallel to the surface of the fixed block, and the flat cam of the angle fixing cam is locked. When the surface is pressed against the surface of the fixed block by the spring force of the coil spring to lock the angle at a position where the angle engages with the rail member, the cam lever is in a stored state substantially parallel to the surface of the fixed block. It is characterized by having such a configuration.

According to a fourth aspect of the present invention, in the human body fixing device, a lever portion of the position fixing lever is formed wider than a cam lever of the angle fixing cam, and both the lever portion and the cam lever are in the retracted state. In this case, the cam lever is configured to be covered by the lever portion.

[0011]

In the above-mentioned human body fixing device of the present invention, when the angle fixing cam is rotated to bring the flat cam surface into contact with the surface of the fixed block, the pin moves the curved cam surface to the surface of the fixed block. It moves more outwardly than when it abuts, whereby the angle pivots about the pivot and into engagement with the rail member from below, and is locked in this condition. Further, when the position fixing lever is rotated to bring the first cam surface into contact with the contact surface of the pressing piece, when the pressing piece makes the second cam surface contact with the contact surface of the pressing piece. More inward than
The pressing surface strongly presses the rail member to lock the human body fixture.

Further, when the angle fixing cam and the fixing rail are both locked, the cam lever of the angle fixing cam is covered with the lever portion of the fixing lever, so that the cam lever is inadvertently turned in the unlocking direction. There is no risk of being moved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A human body fixing device according to an embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view showing a use state of the device together with a swing bed, FIG.
4 is a side sectional view of a fixing block, FIG. 4 is a side view of an angle fixing cam, and FIG. 5 is a side view of a position fixing lever.

In FIG. 1, a swing bed 100 includes a gantry 101
And a stretcher 103 supported on the gantry 101 via a link mechanism 102 so as to be swingable, and a hydraulic cylinder (not shown) as a swing drive source. Stretcher 103
When the upper patient 104 swings (tilts) the stretcher 103, the stretcher 103
In order to prevent the patient 104 from falling off, a pair of human body fixtures 10 for holding the patient 104 from both sides are attached to the stretcher 103 so that the attachment position can be adjusted.

The main part of the human body fixing device 10 is formed of engineering plastics, and has a substantially L-shaped overall shape as shown in FIG. Human body fixture 1 along guide rail 105
A vertical mounting portion 11 having a built-in mechanism for performing position adjustment of 0, and a horizontal mounting portion which is mounted orthogonally to the upper end of the mounting portion 11 and has a width-direction position of the touch board 13 and a built-in angle adjustment fixing mechanism. And a touch board support portion 12.

In FIGS. 2 to 5, reference numeral 1 denotes a fixed block constituting a main part of the mounting portion 11, and a concave portion 1A is formed on the front surface of the fixed block 1, and an angle fixing cam 5 is formed in the concave portion 1A. And a position fixing lever 8. At the lower end of the fixed block 1, an angle 2
Is pivotally mounted by a pivot 3. An engaging body 4 for the upper end surface of the bed rail 105 is attached to the inside of the upper part of the fixed block 1, and an engaging groove 4a formed on the engaging body 4 and engaging the rail 105 and an angle 2
The fixed rail 1 is fixed to the bed rail 105 by vertically interposing the bed rail 105 with the rail engaging groove 2a which is engaged with the lower end surface of the bed rail 105 from below.
It is designed to be movably attached to the side of the vehicle.

In order to rotate the angle 2 clockwise in FIG. 3 to the position where the bed rail 105 is clamped from below, that is, to the position shown by the solid line in FIG. A cam 5 is pivotally connected by a pin 6. A cam surface that is in rolling contact with the concave surface 1b of the fixed block 1 is formed on the angle fixing cam 5. The cam surface is formed by a flat cam surface 5b and a curved cam surface 5c connected thereto (see FIG. 5), and a cam lever 5a protruding from the angle fixing cam 5 is provided in the recess 1A. As shown in FIG. 5, the flat cam surface 5b comes into contact with the concave surface 1b when it is located in a substantially horizontal position.

When the flat cam surface 5b of the angle fixing cam 5 is in contact with the concave surface 1b of the fixing block 1, the angle 2 is in the horizontal state shown by the solid line in FIG.
That is, the angle fixing lever 5 and the angle 2 are disposed on the fixed block 1 so that the bed rail 105 is sandwiched from below. In addition, pin 6
Is configured to be located outside (right side in FIG. 3) the pivot 3, and the coil spring 7 is attached to the pivot 3.
Is wound. One end 7a of the coil spring 7 is locked to the lower end edge of the fixed block 1 and the other end 7b is locked to the pin 6 from the outside (the right side in FIG. 3). It is urged in the direction.

With the configuration in which the pin 6 is urged leftward by the coil spring 7, the angle 2 is
In FIG. 3, it is always urged to rotate counterclockwise. The two cam surfaces of the angle fixing cam 5, as shown in FIG.
When the dimension between the flat cam surface 5b and the pin 6 is C, and the radius of the connecting portion between the flat cam surface 5b and the curved cam surface 5c is D, D> C and the curved surface The radius E of the cam surface 5c is set so as to gradually decrease and become smaller than the dimension C as the distance from the connecting portion increases.

Therefore, from the state shown in FIGS.
When the angle fixing cam 5 is rotated clockwise by the operation of the cam lever 5a and the curved cam surface 5c faces the concave surface 1b, the curved cam surface 5c is pressed against the concave surface 1b by the coil spring 7. Rotate clockwise. Here, since C> E, the pin 6 is pushed by the coil spring 7 and moves leftward. When the position of the pin 6 moves leftward, the angle 2 rotates counterclockwise about the pivot 3. This rotation is forcibly performed by the spring force of the coil spring 7. And angle 2 is shown in FIG.
, Ie, a state where the bed rail 105 is detached.

At this time, the curved cam surface 5c engages with the concave surface 1b at the minimum radius point X (see FIG. 4), and the spring force of the coil spring 7 acts to press the cam 5 to the left. Therefore, this state is stably maintained. During the above rotation of the cam 5, the cam surface is at the inflection point (portion of the maximum dimension D).
Can be overcome by the elastic deformation of the fixed block 1 and the angle fixing cam 5 and the play of the pin 6.

When the angle fixing cam 5 is rotated counterclockwise by operating the cam lever 5a from the state where the angle 2 is detached from the bed rail 105, the radius of the sliding contact point of the curved cam surface 5c with respect to the concave surface 1b is reduced. Since the angle 5 gradually increases, the angle fixing cam 5 gradually moves rightward as it rotates counterclockwise, and accordingly, the angle 2 rotates clockwise. When the angle fixing cam 5 rotates to a position where the flat cam surface 5b of the angle fixing cam 5 comes into contact with the concave surface 1b, the angle 2 is in a state shown by a solid line in FIG. The mating groove 2a is engaged with the bed rail 105 from below.

It is needless to say that a force for pushing the angle fixing cam 5 to the left during the rotation of the angle fixing cam 5 is always applied by the coil spring 7 via the pin 6. In this state, the flat cam surface 5b of the angle fixing cam 5 is pressed by the spring force of the concave surface 1b and the coil spring 7, so that this state is stably held. As described above, the angle 2 is rotated by rotating the angle fixing cam 5 by grasping the cam lever 5a, and the angle 2 is moved to the bed rail 105.
And the angle 2 can be rotated between the state where the angle 2 is separated from the bed rail 105.

Moreover, the connecting portion between the flat cam surface 5b and the curved cam surface 5c of the angle fixing cam 5 has a maximum radius D.
In order to change the posture of the angle 2 by rotating the angle fixing cam 5, it is necessary to get over the connecting portion, and for this purpose, the fixing block 1 and the angle A large amount of force is required to elastically deform the fixing cam 5. Therefore, there is no possibility that the angle 2 rotates unnecessarily. In this way, by rotating the angle fixing cam 5 to any position, the angle 2 also takes any posture, and is automatically locked in that posture.

Then, the angle 2 is detached from the bed rail 105, and the fixed block 1, that is, the human body fixture 10 is removed from the bed rail 105 or the bed rail 105 is removed.
Engage with. Further, a position fixing lever 8 is rotatably mounted on a support shaft 9 above the angle fixing cam 5. The position fixing lever 8 is formed so as to be orthogonal to the lever portion 8a and the abutting surface 30a of the pressing piece 30.
First and second cam surfaces 8b and 8c are formed.

Here, the dimension between the support shaft 9 and the first cam surface 8b is H, and the connection angle between the two cam surfaces 8b and 8c and the support shaft 9
When the dimension between the second cam surface 8c and the support shaft 9 is G, the relationship between the two cam surfaces 8b and 8c is set. Are formed in an arc shape (see FIG. 5). The pressing piece 30 is movably inserted into the fixed block 1, and the pressing piece 30 has one end surface (outer surface) formed on a contact surface 30 a capable of contacting the two cam surfaces 8 b and 8 c, and the other end. Is formed on the pressing surface 30b against the bed rail 105.

The position fixing lever 8 is shown by a solid line in FIG.
The first cam surface 8b pushes the contact surface 30a of the pressing piece 30 inward (to the left in FIGS. 3 and 5) when it is housed in the housing and rotated in a state parallel to the concave surface 1b. As a result, the pressing surface 30b is strongly pressed against the surface of the bed rail 105 to fix (lock) the fixing block 1, that is, the human body fixing device 10.
Is performed. The lock of the fixed block 1 is released by grasping the lever portion 8a from the above-mentioned locked state.
3 and FIG. 5 by turning approximately 90 degrees counterclockwise.

That is, when the fixed lever 8 is turned by approximately 90 ° and the lever portion 8a is turned to a state perpendicular to the concave surface 1b, the second cam surface 8c is brought into contact with the contact surface 30 of the pressing piece 30a.
3A, that is, the state shown by the two-dot chain line in FIG. Here, since the distances (dimensions) H and G between the support shaft 9 and both cam surfaces 8b and 8c are set so that H> G, the rotation of the position fixing lever 8 causes the pressing force on the pressing piece. Is reduced, the pressing force of the pressing surface 30b against the guide rail 105 is also reduced, and the lock of the fixed block 1 is released.

When the position fixing lever 8 is set to approximately 90 ° as described above,
During the rotation, the position fixing lever 8 against which the contact surface 30a contacts.
Is shifted from the first cam surface 8b to the second cam surface 8c, and the distance (dimension) F between the continuous corner portion of the two cam surfaces and the support shaft 9 is adjusted to the both cam surfaces. Since the distances H and G from the shaft 9 are in a relationship of F>H> G, it is necessary to overcome the maximum dimension in order to rotate the position fixing lever 8 by 90 °. For this purpose, a large amount of force is required for elastically deforming the fixed block 1 and the position fixing lever 8, so that once the position fixing lever 8 is rotated to any one of the states, it is inevitably directed in the opposite direction. There is no risk of rotation, and the position fixing lever 8 is automatically locked in that state.

After the position fixing lever 8 is unlocked in this manner, the human body fixture 10 is moved to the bed lever 105.
Along the height of the patient to a desired position. At this time, the angle engagement 2 and the rail engagement groove 2a and the engagement groove 4a of the engagement body 4 are engaged with the bed rail 105, and the human body fixture 10 is moved in this state. Then, the position fixing lever 8 is rotated to return to the locked state again. The position adjustment of the human body fixing device 10 in the height direction is performed while the angle fixing cam 5 is held in a locked state.

When the width of the lever portion 8a is larger than the width of the cam lever 5a and the angle fixing cam 5 and the position fixing lever 8 are both locked, as shown in FIGS. 8a are stored in parallel with the concave surface 1b, and the cam lever 5a is covered with the lever portion 8a. Therefore, when the angle fixing cam 5 and the position fixing lever 8 are both locked, any attempt to rotate the cam lever 5a in the unlocking direction is prevented by the lever portion 8a. That is, the lever portion 8a is connected to the cam lever 5a.
Is formed to prevent a safety mechanism from being accidentally rotated in the unlocking direction. As described above, since the lever portion 8a is configured not to rotate unnecessarily, a double safety mechanism operates to lock the angle fixing cam 5.

Therefore, the human body fixing device 10 is connected to the bed rail.
For removal from the 105, first, the lever 8a of the position fixing lever 8 is rotated counterclockwise to the unlock position (FIG. 3).
Then, the cam lever 5a is rotated clockwise to release the angle 2 from the bed rail 105. Also, when the angle fixing cam 5 and the position fixing lever 8 are in the locked state, the cam lever 5a and the lever portion 8a are both in the recessed portion 1A and are in a storage state parallel to the recessed surface 1a,
Moreover, the surface of the lever portion 8a is the outer surface 1c of the fixed block 1.
Therefore, there is no possibility that the lever portion 8a is accidentally rotated.

[0033]

As described above in detail, the following effects and advantages can be obtained by the human body fixture according to the present invention. (1) The angle engaged with the rail member from below is engaged with and disengaged from the rail member, and holding (locking) the engaged state and the disengaged state by a simple operation of rotating the angle fixing cam. The attachment / detachment of the human body fixture to a bed or the like is simplified. (2) The fixing (locking) and unlocking of the human body fixing device to the rail member can be performed by rotating the position fixing lever, so that the position adjustment of the human body fixing device in the height direction is simplified. (3) When the position fixing lever and the angle fixing cam lock the fixing block and the angle respectively, the lever and the cam lever provided on the position fixing lever and the angle fixing cam are almost the same as the surface of the fixing block. Since it is in the parallel storage state, there is no possibility that the lever portion and the cam lever are erroneously operated. (4) When both the lever and the cam lever are in the retracted state, the cam lever is covered by the lever and a double safety mechanism is acting on the cam lever. This is advantageous in preventing occurrence of such an accident.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of a human body fixture according to one embodiment of the present invention together with a swing bed.

FIG. 2 is a perspective view of the same.

FIG. 3 is a side sectional view of the fixed block.

FIG. 4 is a side view of the cam.

FIG. 5 is a side view of the same position fixing lever.

[Explanation of symbols]

 Reference Signs List 1 fixed block 2 angle 2a rail engaging groove 3 pivot 4 engaging body 4a engaging groove 5 angle fixing cam 5a cam lever 5b planar cam surface 5c curved cam surface 6 pin 7 coil spring 8 position fixing lever 8a lever portion 8b first 8c Second cam surface 9 Support shaft 10 Human body fixture 11 Mounting part 12 Touch board support part 13 Touch board 30 Pressing piece 30a Contact surface 30b Pressing surface 100 Swing bed 101 Mount 102 Link mechanism 103 Stretcher 104 Bed rail as patient 105 rail member

Claims (4)

(57) [Claims] 1. A human body fixing device for holding a patient on a stretcher section from both sides and fixing the stretcher section, the lengthwise position of the stretcher section being adjustable, and a touch as a contact section to the patient. A mounting portion for mounting a support member of the board is provided. The mounting portion is attached to one side surface of the stretcher portion and extends in the length direction of the stretcher portion inside the upper portion of a fixed block constituting a main portion of the mount portion. An engagement body having an engagement groove engaged with the rail member from above is attached, and an angle having a rail engagement groove engaged with the rail member from below can be pivoted via a pivot below the fixed block. A coil spring is wound around the pivot, one end of the coil spring is locked to the fixed block, and the other end is locked from outside to a pin implanted in the angle, An angle fixing cam is rotatably mounted on the angle fixing cam, and the angle fixing cam has a flat cam surface that can be brought into contact with the surface of the fixed block and a curved cam surface that is connected to the flat cam surface. The cam surface of the angle cam fixing cam has a maximum radius at a connecting portion between the flat cam surface and the curved cam surface, and the radius of the curved cam surface increases as the distance from the connecting portion increases. A human body fixing device characterized in that the flat cam surface is set so as to be gradually reduced to be smaller than the distance between the pin and the pin. 2. The human body fixture according to claim 1, wherein a pressing piece having an inner surface formed on a pressing surface against a side surface of the rail member is movably inserted into the fixing block, and an outer surface of the pressing piece. A position fixing lever having a first cam surface and a second cam surface capable of contacting the contact surface formed on the fixing block is rotatably attached to the fixing block via a support shaft; A human body fixture, wherein a distance between a cam surface and the support shaft is set larger than a distance between the second cam surface and the support shaft. 3. The human body fixing device according to claim 2, wherein a lever portion for rotation operation and a cam lever are respectively protruded from the position fixing lever and the angle fixing cam, and a first of the position fixing lever is provided. When the pressing piece is pushed toward the rail member by the cam surface to lock the fixed block, the lever portion is in a storage state substantially parallel to the surface of the fixed block, and the plane of the cam for fixing the angle is locked. When the cam lever is pressed against the surface of the fixed block by the spring force of the coil spring to lock the angle at a position where the angle engages with the rail member, the cam lever is in a retracted state substantially parallel to the surface of the fixed block. A human body fixture, characterized in that it is configured to: 4. The human body fixing device according to claim 3, wherein a lever portion of the position fixing lever is formed to be wider than a cam lever of the angle fixing cam, and both the lever portion and the cam lever are the same. A human body fixture, wherein the cam lever is configured to be covered by the lever portion when in a stowed state.